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PATENTED AUG. 11, 1868-.

L. SEXAUBR.

WATER METER.

2 SHEETS-SHEET 1- M Wm No. 81,015. PATENTED AUG. 11, 1868.

L. SEXAUER.

WATER METER.

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Lam Patent No. 1,015, dated August 11,1868.

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Be it known that I, LOUIS SEXAUEB', of New York, in the county and State or New York, have invented a new and useful Improvement in Fluid-Meteru and I do hereby declare the following .to be a full, clear, and exact description thereof, which will enable those skilled .in the art to make and use the same, reference being had to the accompanying drawing, forming part of this specification, in which dr'awing- Figure 1 represents a horizontal section of this invention taken in the plane indic ted by the line 2: re fig. 8, and looking in the direction of the arrow, opposite to that line. Y

Figure2 is a transverse section thereof, the line 319, fig. 1, indicatingthe plane of section.

Figure 8 is a longitudinal section thereof, the plane of section being indicated by theline z z-,'fig. 1.

Figure 4 is; detached'section of the valve, explaining the position thereof'at a certain stage of the'stroke.

Similar letters indicate corresponding parts.

This invention relates to certain improvements on a fluid-meter, for which Letters Patent have been granted to Frans Wagner and myself, March 8, 1868.

7 These improvements consist principally in the arrangement of a diaphragrnor piston, in combination with the lovers and slide which impart motion to the valve, saiddiaphragm or piston being exposed to the directaction of the fluid, in such a manner that the valve is'changed by the action of the 'fluid itself, and without the aid of springs.

p The inventionoonsists further in giving to the main piston a certain dead motion on its r'od,"i n such umannor that during the interval occupied by this dead motion of the piston, the necessary timefcr changing the valve is obtained, and thereby the working parts of the meterare enabled to clear each other without binding.

A represents the piston ofmy meter, which is attachedto a rod, B, and fitted into a cylinder, G.

The fluid to be.messured enters thefcylinder through the supply-pipe D, and it passes of through the discharge-pipe E, its course through the cylinder being changed by an oscillating-valve, F, which is so arranged that the fluid alternately passes in at one and-out at the other end of the cylinder, and that by the action of the fluid a reciprocating motion is imparted to the piston.

The valve is changed by two projections, a -b, on the piston-rod, and by a series of lovers, undo slide, as

will he presently explained.

To the spindle of the valve is secured a lever, c, which is provided with a slot to catch over a stud, d, which projects from a slide, e.

w This slide moves in suitable guides,-f, attached to the inside of the valve-chamber, and it receives an intermittent reciprocating motion by a lever, g, which extendsfrom the vertical rock-shaft h.

This rock-shaft has bearing in a platform, a, secured to the inside of the valve-chum end is secured a segmental disk, j, provided with two studs, k.

' Between these studs 'moves a lever, l, which turns loosely on the rock-shaft h, and the end of which is connected by a pivot, m, with a lever, 1;, which connects by a pivot, o, with a. lever, p.

her, and to its lower This last-named lever is mounted on -a rock-shaft, g, from which extends a lever, r, to the rods of the diaphragm'or supplementary piston t.

In the drawing, I'have represented a diaphragm, which is secured in a chamber, G, under the valvechamher, but it will be readily understood that this diaphragm can be replaced by a simple piston.

' The chamber G communicates by a'ch'unneL-u, (shown in dotted lines in fig. 2,) with the eupply-pipc-ID,

undhy another channel, r, with the valve-chamber, so that, the diaphragm is always exposed to the pressure of the'fluid, which has a'tendency to force the some back to the position which-it occupies in figs. 1 and 3 of the drawing.

If the main piston, B, moves in the direction of the arrow marked near it in fig. 1, the projection is of the piston-roditrikes the fulcrum oi the toggle-arms n l, and carries the same back beyond the line of equilibrium, during which purt of the motion,'the diaphragm t. is carried-out against the pressure of the fluid acting on it,

and the valve F is" partially turned, but as soon as the fulcrum of toggle-arms ln'has passed the'line of cqnilihrium, theidiaphragm .t is carriedback to its oi igiual position, by the pressure of the fluid, and the change in the position of the valve is completed. The motion of the piston is thereby reversed, the projection b strikes I the toggle-arms n Z, and the valve is again changed in the opposite direction, and so on.-

When the piston approaches either end of its stroke, and the fulcrum of the toggle-nrms comes close to the line of equilibrium, said toggle-arms being exposed to the pressure due to the action of the fluid on the dinphragm, have a tendency to pass the line of equilibrium, and to change the valve before the piston has completed its stroke. If this motion should take place, the correct operation of the meter would be disturbed, and

l I have therefore applied two stops, a b, to the upper surface of the.;piston-nod,and a projection, c', to the slide e. 1

By these means, the slide is prevented from traversing across the piston-rod until the 'stops a b have cleared the projection c. I I

When the piston has reached either end of its stroke, the valve is partly changed, (see'fig. 4 of the drawing,) and the piston begins to return, while the change of the valve is completed by the pressure .of the fluid on the diaphragm, and before the projection c of the slides has had time to clear 'the pistpn-rod. The piston B has-therefore a dead motion on its red, so that it will move a short distance without said rod, and thereby the ends of the steps a b are prevented from being forced against the projection c, whereby the working parts of the mechanism would be strained, and unneeessary'power would be consumed.

The motion of the piston-rod is confined by stops, (2', formed at either end, and coming in contact at one end of the stroke with the platform i, and at the other end with a projection, e, secured to the said platform.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The diaphragm or supplementary piston t, communicating with the supply-pipe D, and with the'valvschamber, in combination with the tcgglemrms n l, piston-rod B, slide e, and valve F, substantially as and for the purpose described. p

2. The steps a b on the piston-rod, in combination with the. projection c on the slide 0, substantially as and for the purpose set forth.

3. Giving to the piston a dead motion on its red, so as to gain time for the projection c to clear the steps a b, as set forth. I v

4. The steps d on the piston-rod, in combination with the projection ef and platform 1', substantially as and for the purpose described.

LOUIS SEXAUER.

Witnesses:

W. Haorr, E. F. Kasrssnunnn. 

